USA 253, 40099
Orbit data source: Space-Track
USA 253, 40099 is a payload satellite owned by USAF AFSPC (US) in GEO that was launched on Mon, 28 Jul 2014 UTC via a DELTA 4M+(4,2) launch vehicle from the Air Force Eastern Test Range (AFETR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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40099 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
OSC
Mission
Non-operational Defense Classified
Bus & Motor
GEOSTAR-1, AOCS
Mass
500 kg wet, 500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 2.5 m
Radar Cross Section
7.621 m²
Expand to show TLE details & historyLast TLE update: 4 days ago
TLE from 4 days ago
0 USA 253
1 40099U 14043A 26065.75905655 -.00000143 00000-0 00000+0 0 9993
2 40099 5.2311 76.4797 0001305 160.5960 16.7202 0.96774433 26371Epoch: 2026-03-06T18:13Z
TLE epoch observation values (Epoch: 2026-03-06T18:13:02.485Z)
Latitude
0.2666°
Longitude
176.08261°
Altitude
36,790.546 km
Speed
3.039 km/s
True Right ascension
16h 55m 20s
True Declination
0° 15' 59"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
15:09:29
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
36,803.108 km
Perigee altitude
36,791.839 km
Semi-major axis
43,175.61 km
Eccentricity
0.00013
Inclination
5.2311°
RAAN
76.4797°
Arg. of periapsis
160.596°
True anomaly
16.7245°
Mean anomaly
16.7202°
Eccentric anomaly
16.72235°
Mean motion
0.24193 °/min
Orbital period
1,488.05 mins
BSTAR
0
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Other satellites on launch #43 in the year 2014 (2014-07-28 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.USA 253 Visibility
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
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| USA 253 is likely not visible in the next few days. |
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40099 neighbors
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Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
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